<?php

    /**
     * PHPExcel_Style_Color
     * Copyright (c) 2006 - 2015 PHPExcel
     * This library is free software; you can redistribute it and/or
     * modify it under the terms of the GNU Lesser General Public
     * License as published by the Free Software Foundation; either
     * version 2.1 of the License, or (at your option) any later version.
     * This library is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     * Lesser General Public License for more details.
     * You should have received a copy of the GNU Lesser General Public
     * License along with this library; if not, write to the Free Software
     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
     * @category   PHPExcel
     * @package    PHPExcel_Style
     * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
     * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
     * @version    ##VERSION##, ##DATE##
     */
    class PHPExcel_Style_Color extends PHPExcel_Style_Supervisor implements PHPExcel_IComparable {
        /* Colors */
        const COLOR_BLACK      = 'FF000000';
        const COLOR_WHITE      = 'FFFFFFFF';
        const COLOR_RED        = 'FFFF0000';
        const COLOR_DARKRED    = 'FF800000';
        const COLOR_BLUE       = 'FF0000FF';
        const COLOR_DARKBLUE   = 'FF000080';
        const COLOR_GREEN      = 'FF00FF00';
        const COLOR_DARKGREEN  = 'FF008000';
        const COLOR_YELLOW     = 'FFFFFF00';
        const COLOR_DARKYELLOW = 'FF808000';
        /**
         * Indexed colors array
         * @var array
         */
        protected static $indexedColors;
        /**
         * ARGB - Alpha RGB
         * @var string
         */
        protected $argb = null;
        /**
         * Parent property name
         * @var string
         */
        protected $parentPropertyName;

        /**
         * Create a new PHPExcel_Style_Color
         * @param    string  $pARGB               ARGB value for the colour
         * @param    boolean $isSupervisor        Flag indicating if this is a supervisor or not
         *                                        Leave this value at default unless you understand exactly what
         *                                        its ramifications are
         * @param    boolean $isConditional       Flag indicating if this is a conditional style or not
         *                                        Leave this value at default unless you understand exactly what
         *                                        its ramifications are
         */
        public function __construct($pARGB = PHPExcel_Style_Color::COLOR_BLACK, $isSupervisor = false, $isConditional = false) {
            //    Supervisor?
            parent::__construct($isSupervisor);
            //    Initialise values
            if (!$isConditional) {
                $this->argb = $pARGB;
            }
        }

        /**
         * Adjust the brightness of a color
         * @param    string $hex              The colour as an RGBA or RGB value (e.g. FF00CCCC or CCDDEE)
         * @param    float  $adjustPercentage The percentage by which to adjust the colour as a float from -1 to 1
         * @return    string        The adjusted colour as an RGBA or RGB value (e.g. FF00CCCC or CCDDEE)
         */
        public static function changeBrightness($hex, $adjustPercentage) {
            $rgba = (strlen($hex) == 8);
            $red   = self::getRed($hex, false);
            $green = self::getGreen($hex, false);
            $blue  = self::getBlue($hex, false);
            if ($adjustPercentage > 0) {
                $red   += (255 - $red) * $adjustPercentage;
                $green += (255 - $green) * $adjustPercentage;
                $blue  += (255 - $blue) * $adjustPercentage;
            } else {
                $red   += $red * $adjustPercentage;
                $green += $green * $adjustPercentage;
                $blue  += $blue * $adjustPercentage;
            }
            if ($red < 0) {
                $red = 0;
            } elseif ($red > 255) {
                $red = 255;
            }
            if ($green < 0) {
                $green = 0;
            } elseif ($green > 255) {
                $green = 255;
            }
            if ($blue < 0) {
                $blue = 0;
            } elseif ($blue > 255) {
                $blue = 255;
            }
            $rgb = strtoupper(str_pad(dechex($red), 2, '0', 0) . str_pad(dechex($green), 2, '0', 0) . str_pad(dechex($blue), 2, '0', 0)
            );
            return (($rgba) ? 'FF' : '') . $rgb;
        }

        /**
         * Get the red colour component of an RGB value
         * @param    string  $RGB             The colour as an RGB value (e.g. FF00CCCC or CCDDEE
         * @param    boolean $hex             Flag indicating whether the component should be returned as a hex or a
         *                                    decimal value
         * @return    string        The red colour component
         */
        public static function getRed($RGB, $hex = true) {
            return self::getColourComponent($RGB, strlen($RGB) - 6, $hex);
        }

        /**
         * Get a specified colour component of an RGB value
         * @private
         * @param    string  $RGB             The colour as an RGB value (e.g. FF00CCCC or CCDDEE
         * @param    int     $offset          Position within the RGB value to extract
         * @param    boolean $hex             Flag indicating whether the component should be returned as a hex or a
         *                                    decimal value
         * @return    string        The extracted colour component
         */
        private static function getColourComponent($RGB, $offset, $hex = true) {
            $colour = substr($RGB, $offset, 2);
            if (!$hex) {
                $colour = hexdec($colour);
            }
            return $colour;
        }

        /**
         * Get the green colour component of an RGB value
         * @param    string  $RGB             The colour as an RGB value (e.g. FF00CCCC or CCDDEE
         * @param    boolean $hex             Flag indicating whether the component should be returned as a hex or a
         *                                    decimal value
         * @return    string        The green colour component
         */
        public static function getGreen($RGB, $hex = true) {
            return self::getColourComponent($RGB, strlen($RGB) - 4, $hex);
        }

        /**
         * Get the blue colour component of an RGB value
         * @param    string  $RGB             The colour as an RGB value (e.g. FF00CCCC or CCDDEE
         * @param    boolean $hex             Flag indicating whether the component should be returned as a hex or a
         *                                    decimal value
         * @return    string        The blue colour component
         */
        public static function getBlue($RGB, $hex = true) {
            return self::getColourComponent($RGB, strlen($RGB) - 2, $hex);
        }

        /**
         * Get indexed color
         * @param    int     $pIndex                  Index entry point into the colour array
         * @param    boolean $background              Flag to indicate whether default background or foreground colour
         *                                            should be returned if the indexed colour doesn't exist
         * @return    PHPExcel_Style_Color
         */
        public static function indexedColor($pIndex, $background = false) {
            // Clean parameter
            $pIndex = intval($pIndex);
            // Indexed colors
            if (is_null(self::$indexedColors)) {
                self::$indexedColors = [
                    1  => 'FF000000',
                    //    System Colour #1 - Black
                    2  => 'FFFFFFFF',
                    //    System Colour #2 - White
                    3  => 'FFFF0000',
                    //    System Colour #3 - Red
                    4  => 'FF00FF00',
                    //    System Colour #4 - Green
                    5  => 'FF0000FF',
                    //    System Colour #5 - Blue
                    6  => 'FFFFFF00',
                    //    System Colour #6 - Yellow
                    7  => 'FFFF00FF',
                    //    System Colour #7- Magenta
                    8  => 'FF00FFFF',
                    //    System Colour #8- Cyan
                    9  => 'FF800000',
                    //    Standard Colour #9
                    10 => 'FF008000',
                    //    Standard Colour #10
                    11 => 'FF000080',
                    //    Standard Colour #11
                    12 => 'FF808000',
                    //    Standard Colour #12
                    13 => 'FF800080',
                    //    Standard Colour #13
                    14 => 'FF008080',
                    //    Standard Colour #14
                    15 => 'FFC0C0C0',
                    //    Standard Colour #15
                    16 => 'FF808080',
                    //    Standard Colour #16
                    17 => 'FF9999FF',
                    //    Chart Fill Colour #17
                    18 => 'FF993366',
                    //    Chart Fill Colour #18
                    19 => 'FFFFFFCC',
                    //    Chart Fill Colour #19
                    20 => 'FFCCFFFF',
                    //    Chart Fill Colour #20
                    21 => 'FF660066',
                    //    Chart Fill Colour #21
                    22 => 'FFFF8080',
                    //    Chart Fill Colour #22
                    23 => 'FF0066CC',
                    //    Chart Fill Colour #23
                    24 => 'FFCCCCFF',
                    //    Chart Fill Colour #24
                    25 => 'FF000080',
                    //    Chart Line Colour #25
                    26 => 'FFFF00FF',
                    //    Chart Line Colour #26
                    27 => 'FFFFFF00',
                    //    Chart Line Colour #27
                    28 => 'FF00FFFF',
                    //    Chart Line Colour #28
                    29 => 'FF800080',
                    //    Chart Line Colour #29
                    30 => 'FF800000',
                    //    Chart Line Colour #30
                    31 => 'FF008080',
                    //    Chart Line Colour #31
                    32 => 'FF0000FF',
                    //    Chart Line Colour #32
                    33 => 'FF00CCFF',
                    //    Standard Colour #33
                    34 => 'FFCCFFFF',
                    //    Standard Colour #34
                    35 => 'FFCCFFCC',
                    //    Standard Colour #35
                    36 => 'FFFFFF99',
                    //    Standard Colour #36
                    37 => 'FF99CCFF',
                    //    Standard Colour #37
                    38 => 'FFFF99CC',
                    //    Standard Colour #38
                    39 => 'FFCC99FF',
                    //    Standard Colour #39
                    40 => 'FFFFCC99',
                    //    Standard Colour #40
                    41 => 'FF3366FF',
                    //    Standard Colour #41
                    42 => 'FF33CCCC',
                    //    Standard Colour #42
                    43 => 'FF99CC00',
                    //    Standard Colour #43
                    44 => 'FFFFCC00',
                    //    Standard Colour #44
                    45 => 'FFFF9900',
                    //    Standard Colour #45
                    46 => 'FFFF6600',
                    //    Standard Colour #46
                    47 => 'FF666699',
                    //    Standard Colour #47
                    48 => 'FF969696',
                    //    Standard Colour #48
                    49 => 'FF003366',
                    //    Standard Colour #49
                    50 => 'FF339966',
                    //    Standard Colour #50
                    51 => 'FF003300',
                    //    Standard Colour #51
                    52 => 'FF333300',
                    //    Standard Colour #52
                    53 => 'FF993300',
                    //    Standard Colour #53
                    54 => 'FF993366',
                    //    Standard Colour #54
                    55 => 'FF333399',
                    //    Standard Colour #55
                    56 => 'FF333333'
                    //    Standard Colour #56
                ];
            }
            if (array_key_exists($pIndex, self::$indexedColors)) {
                return new PHPExcel_Style_Color(self::$indexedColors[$pIndex]);
            }
            if ($background) {
                return new PHPExcel_Style_Color(self::COLOR_WHITE);
            }
            return new PHPExcel_Style_Color(self::COLOR_BLACK);
        }

        /**
         * Bind parent. Only used for supervisor
         * @param mixed  $parent
         * @param string $parentPropertyName
         * @return PHPExcel_Style_Color
         */
        public function bindParent($parent, $parentPropertyName = null) {
            $this->parent             = $parent;
            $this->parentPropertyName = $parentPropertyName;
            return $this;
        }

        /**
         * Apply styles from array
         * <code>
         * $objPHPExcel->getActiveSheet()->getStyle('B2')->getFont()->getColor()->applyFromArray( array('rgb' => '808080') );
         * </code>
         * @param    array $pStyles Array containing style information
         * @throws    PHPExcel_Exception
         * @return PHPExcel_Style_Color
         */
        public function applyFromArray($pStyles = null) {
            if (is_array($pStyles)) {
                if ($this->isSupervisor) {
                    $this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($this->getStyleArray($pStyles));
                } else {
                    if (array_key_exists('rgb', $pStyles)) {
                        $this->setRGB($pStyles['rgb']);
                    }
                    if (array_key_exists('argb', $pStyles)) {
                        $this->setARGB($pStyles['argb']);
                    }
                }
            } else {
                throw new PHPExcel_Exception("Invalid style array passed.");
            }
            return $this;
        }

        /**
         * Build style array from subcomponents
         * @param array $array
         * @return array
         */
        public function getStyleArray($array) {
            switch ($this->parentPropertyName) {
                case 'endColor':
                    $key = 'endcolor';
                    break;
                case 'color':
                    $key = 'color';
                    break;
                case 'startColor':
                    $key = 'startcolor';
                    break;
            }
            return $this->parent->getStyleArray([$key => $array]);
        }

        /**
         * Set RGB
         * @param    string $pValue RGB value
         * @return PHPExcel_Style_Color
         */
        public function setRGB($pValue = '000000') {
            if ($pValue == '') {
                $pValue = '000000';
            }
            if ($this->isSupervisor) {
                $styleArray = $this->getStyleArray(['argb' => 'FF' . $pValue]);
                $this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($styleArray);
            } else {
                $this->argb = 'FF' . $pValue;
            }
            return $this;
        }

        /**
         * Get ARGB
         * @return string
         */
        public function getARGB() {
            if ($this->isSupervisor) {
                return $this->getSharedComponent()->getARGB();
            }
            return $this->argb;
        }

        /**
         * Set ARGB
         * @param string $pValue
         * @return PHPExcel_Style_Color
         */
        public function setARGB($pValue = PHPExcel_Style_Color::COLOR_BLACK) {
            if ($pValue == '') {
                $pValue = PHPExcel_Style_Color::COLOR_BLACK;
            }
            if ($this->isSupervisor) {
                $styleArray = $this->getStyleArray(['argb' => $pValue]);
                $this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($styleArray);
            } else {
                $this->argb = $pValue;
            }
            return $this;
        }

        /**
         * Get the shared style component for the currently active cell in currently active sheet.
         * Only used for style supervisor
         * @return PHPExcel_Style_Color
         */
        public function getSharedComponent() {
            switch ($this->parentPropertyName) {
                case 'endColor':
                    return $this->parent->getSharedComponent()->getEndColor();
                case 'color':
                    return $this->parent->getSharedComponent()->getColor();
                case 'startColor':
                    return $this->parent->getSharedComponent()->getStartColor();
            }
        }

        /**
         * Get RGB
         * @return string
         */
        public function getRGB() {
            if ($this->isSupervisor) {
                return $this->getSharedComponent()->getRGB();
            }
            return substr($this->argb, 2);
        }

        /**
         * Get hash code
         * @return string    Hash code
         */
        public function getHashCode() {
            if ($this->isSupervisor) {
                return $this->getSharedComponent()->getHashCode();
            }
            return md5($this->argb . __CLASS__
            );
        }
    }
